Windows 10: My Windows Defender disappeared after I got this computer

Hi everyone,I just had this problem recently. My Windows Defenders disappeared. I've tried some way from the internet but it's not working. In the picture, I'm trying to find windows defender and I entered the best match but it's still open the normal Setting. I need a solution, thanks!

:)

 

Task to auto update windows defender definitions disappears

My mom has a new laptop with windows 8.1, we always set the windows updates to manual.
On our other windows 8.1 computers I have created a task for auto updating windows defender definitions, which works fine for us.

This is how I created this task:

"Click on "Create Task", name it what you like (mine is Daily Signature Update), set the trigger as the time you want it to run every day.

For Action browse to Program Files\Windows Defender\MpCmdRun.exe and select it. In "Add arguments" add -SignatureUpdate -MMPC"

But somehow this task disappears once it has run on my mom's laptop.
I'm logged in as admin and then I also tried it with running the task scheduler as admin, the task just disappears every day for some reason, while it works fine on our other windows 8.1 computers.

Anyone an idea why this task disappears every time?

Thanks.

 

Windows Defender automatically disabled

Hi Ahmad,

Thank you for responding.

I suggest you to place the computer in safe mode and check if the Windows Defender works.

Method 1:

Step 1: Start computer in safe mode.

• 
  Type Settings in the search box on the desktop, select
  Settings.
  
• 
  Here select Change pc settings and then
  General.
  
• 
  Scroll down to Advanced startup, click
  Restart now.
  
• 
  Click on Troubleshoot, Advanced options, and Startup Settings.
  
• 
  Click Restart, select
  Safe mode and then press Enter.
  

Step 2: Try to
run the Windows Defender in safe mode.

Steps:

• Press Windows key and type Windows Defender.
• Right click on it and select Run as Administrator.
• It may prompts you to enter the password.

Method 2: If the issue still persists, place the computer in normal mode and check for the Windows Defender services.

Step 1: Place the computer in normal mode.

• Press Windows + R keys to open
  Run command.
• Type msconfig and press
  Enter.
• In the System Configuration
  window, click on General tab.
• Select Start-up selection as Normal startup, click on Apply and Ok.
• Follow onscreen instructions.

Step 2: Once you are in normal mode, I suggest you to check for the
Windows Defender services.

• Press Windows + R keys to open
  Run command.
• Type services.msc and press
  Enter.
• Search for Windows Defender, right click on it and
  start the service.
• Also, set the Startup type to
  Automatic.
• Do the same for Windows Defender Network Inspection Service.
• Now check if you are able to access Windows Defender.

Hope it helps. Kindly update the status of this issue, we will be happy to help you.

 

Windows Defender - Firewall and Network Protection

Hi,

We suggest that you try restarting Windows Defender service and check if issue is resolved. Follow the steps below:

• Press Windows key + X key and type services.msc,
  hit enter.
• Search Windows Defender Service.:1)Windows Defender Service ; 2)
  Windows Defender Network.
• Right click on each and press Start.
• Restart your computer and check if issue persist.

Let us know if you need further assistance.